What do you mean 1 person worked on this??? How did you manage to cram so much! The car controls themselves would be a lot, but to that you have a literal city, destructible environment (and people, lmao), day and night cycle, AI for other cars and people, a whole set of curses (and they even are more creative than i expected, like the one that basically makes you drive backwards). And you know, the whole delivering packages and balancing them mechanic.
I wouldn't be able to even make the assets for this in 7 days! This was extremely impressive.
I usually put at least one criticism at the end but I don't know what to say. I guess there's one balancing issue - driving with 2 boxes is a piece of cake and driving with 3 is so easy to mess up. The difficulty jump could be a little bit smoother.